Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Charles Edward Merrill Sr., DO

Family Medicine Physician in Marietta, OH · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1366547382

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Registry record

Entity type Individual (Type 1)

Name Dr. Charles Edward Merrill Sr.

Credential DO

Sex Male

Practice address Marietta, OH, 45750

Phone (740) 434-5952

Fax (740) 434-5903

Enumeration date Sep 14, 2006

Last updated in NPPES Jul 13, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 34 . 005908 (OH) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 34.005908 (OH) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
0987526	Medicaid	OH	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Charles Merrill's NPI record?

Cross-check NPI 1366547382 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1366547382 active?

Yes, as of the latest NPPES snapshot, NPI 1366547382 is active (record last updated 2011-07-13).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-13.